Fix fallout from 461e0f9eaf9895ecd0eba67b35a4d2cec8a5e5c5

Change-Id: I9df591c084175848bb58a97db2241f18cbe53db2
diff --git a/slideshow/source/engine/OGLTrans/mac/OGLTrans_TransitionerImpl.mm b/slideshow/source/engine/OGLTrans/mac/OGLTrans_TransitionerImpl.mm
index 70417c7..e4b7f22 100644
--- a/slideshow/source/engine/OGLTrans/mac/OGLTrans_TransitionerImpl.mm
+++ b/slideshow/source/engine/OGLTrans/mac/OGLTrans_TransitionerImpl.mm
@@ -366,7 +366,7 @@ bool OGLTransitionerImpl::initWindowFromSlideShowView( const Reference< presenta
 
    const SystemEnvData* sysData(pPWindow->GetSystemData());

    GLWin.apView = sysData->pView;
    GLWin.apView = sysData->mpNSView;

    NSOpenGLPixelFormat* fmt = [AquaOpenGLView defaultPixelFormat];
    Window *pFrameWindow = pPWindow->GetWindow(WINDOW_FRAME);